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Finding the Fourth Proportional to 169,139.68, 253,122.10 and 105,071.51

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Solution

The fourth proportional to 169,139.68, 253,122.10 and 105,071.51 is: 157,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,139.68 : 253,122.10 = 105,071.51 : x
  2. Step 2: Convert to fraction form
    169,139.68/253,122.10 = 105,071.51/x
  3. Step 3: Cross multiply
    169,139.68x = 253,122.10 × 105,071.51
  4. Step 4: Simplify right side
    169,139.68x = 26,595,921,631.50
  5. Step 5: Solve for x
    x = 26,595,921,631.50/169,139.68
  6. Step 6: Final answer
    x = 157,242.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.